Anti-fungal activity of SiO2/Ag2S nanocomposites against Aspergillus niger

authors	Fateixa, S; Neves, MC; Almeida, A; Oliveira, J; Trindade, T
nationality	International
journal	COLLOIDS AND SURFACES B-BIOINTERFACES
author keywords	Silver sulfide; Anti-fungal activity; Nanoparticles; Silica
keywords	SINGLE-MOLECULE PRECURSORS; SILVER ION RELEASE; ESCHERICHIA-COLI; SILICA SPHERES; NANOPARTICLES; GROWTH; NANOCRYSTALLITES; FILMS
abstract	Submicron particles of amorphous SiO2 have been used to grow Ag2S nanophases at their surfaces. SEM and TEM analysis showed morphological well-defined nanocomposite particles consisting of Ag2S nanocrystals dispersed over the silica surfaces. These SiO2/Ag2S nanocomposites were investigated as anti-fungal agents against Aspergillus niger in different experimental conditions, including as nanofillers in cellulosic fibres. The anti-fungal activity in these composite systems is suggested to result from a synergistic effect due to Ag2S anti-fungal centres and the SiO2 surfaces in promoting the adsorption of the fungus. (c) 2009 Elsevier B.V. All rights reserved.
publisher	ELSEVIER SCIENCE BV
issn	0927-7765
year published	2009
volume	74
issue	1
beginning page	304
ending page	308
digital object identifier (doi)	10.1016/j.colsurfb.2009.07.037
web of science category	Biophysics; Chemistry, Physical; Materials Science, Biomaterials
subject category	Biophysics; Chemistry; Materials Science
unique article identifier	WOS:000271371300045